2. JVM Troubleshooting Guide

3. JUnit Tutorial for Unit Testing

4. Java Annotations Tutorial3>

5. Java Interview Questions

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“In 1997, IBM asked James Barry to make sense of the company’s struggling web server business. Barry found that IBM had lots of pieces of the puzzle in different parts of the company, but not an integrated product offering for web services. His idea was to put together a coordinated package, which became WebSphere. The problem was that a key ...

Prologue The thing I love the most in Kubernetes is the way services are discovered. Why? Mostly because the user code doesn’t have to deal with registering, looking up services and also because there are no networking surprises (if you’ve ever tried a registry based approach, you’ll know what I am talking about). This post is going to cover how ...

Every few months we run a relational to graph meetup at the Neo London office where we go through how to take your data from a relational database and into the graph. We use the Northwind dataset which often comes as a demo dataset on relational databases and come up with some queries which seem graph in nature. My favourite ...

Big Data has been a hype for many years. I’ve seen a few “Big Data” projects start in the past with a lot of fanfare and promise.The promise has always been that “we will start getting a holistic picture of our departmental silos and gain numerous insights from our data that will help us get ahead of our competitors”. The ...

In a microservice world, multiple services are typically distributed in a PaaS environment. Immutable infrastructure, such as those provided by containers or immutable VM images. Services may scale up and down based upon certain pre-defined metrics. Exact address of the service may not be known until the service is deployed and ready to be used. This dynamic nature of service ...

An honorable member in any development group manifest is enhancing people’s knowledge and expertise. However, it often gets positioned in the infamous “Important/Not Urgent” quarter of the Eisenhower matrix, and gets less attention than it should. Even if an organization does invest effort in this, it will be managed separately from the development process. In this post I will suggest ...

Want to boost your knowledge on Hadoop ? Then we have something especially for you! We are partnering with Manning Publications, publisher of cool programming books, and we are running a contest giving away FREE copies of their latest Hadoop eBook. Hadoop in Practice, Second Edition provides over 100 tested, instantly useful techniques that will help you conquer big data, ...

If you are building mobile apps then you are connecting to some REST API. For example, if you want to resolve an address to a latitude/longitude information to display on a map, you might use the Google Geocoding API: https://maps.googleapis.com/maps/api/geocode/json?address=San Francisco,CA&key=AIzaSyDvFMYGjeR02RH If you are invoking the API from the client, then the API key also has to be present on ...

Zero downtime deployment — i.e., making sure your application can be deployed without negative impact to your customers — is something most of us strive for. It is a prerequisite for successful continuous delivery, so you’re able to deploy at any time and never fear pushing a new release. ElasticBeanstalk, the Platform as a Service component of AWS, has great ...

I got a chance to play with Spring-Cloud to create a sample set of cloud ready microservices and I am very impressed by how Spring-Cloud enables different infrastructure components and services to work together nicely. I am used to creating microservices based on Netflix OSS based stack and typically in a Netflix stack Eureka is considered the hub using which ...

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